Revolving self-cleaning moldboard plow



Aug. 5, 1924.

G. H. BLOCK REVOLVING SELF CLEANING MOLDBOARD PLOW Filed Feb. 19. 1923 61H01. nu,

Patented Aug. 5, 1924. Y l.

UNTED STATES" PATENT"F'C.V

GEORGE HARRISON BLCK, OF HANNA, ALBERTA, CANADA, ASSIGNOR F THIRTY-LIVE ONE-HUNDREDTHS TO SAYLE .ALLEN BROWN, OF HANNA., ALBERTA, CANADA.

REVOLVING SELF-CLEANING MOLDBOARD PLOW'.`

Application .filed February 19, 1923. Serial No. 620,068;

To all 'whom it may concer/a: y Y 0f the bottom wall 4 being inclined for- Be it known that I, GEORGE HARRISON wardly and terminating in a point with the BLOCK, a British subject, and a resident of Vforward endrof the vertical wall 3, the casthe Postal District of Hanna, in the Proving having a sloping wall 5, of a somewhat ince of -Alberta, Dominion of Canada, concaved form, joining the upper inclined 60 have invented certain new and useful Imedge of the vertical wall 3, and the outer provements in a Revolving Self-Cleaning inclined edge of the bottom wall et. lt will Moldboard Plow, of which the following is a be seen from this construction that the cas- Specination, ing is of substantially triangular cross sec- This invention relates to revolving selftion and of substantially uniformly reduc- 65 cleaning mold board structures for plows. lng Size from the rear to the forward end, An Object 0f the invention resides in prowhere it terminates in substantially a point, viding a plow structure wherein suitable over which is mounted the plow share 6 ot means are provided for rotatably mountingV usual construction, which is bolted to the a disc mold board, for cooperation with a sloping wall, as indicated at 7 and which is Share Carried thereby provided with a vertical extension 8, of usual Another object of the invention resides in construction, extending along the outside of providing a plow structure wherein a casing the forward end of the vertical wall 3. of suitable shape is provided on the lower A hearing 9 is mounted in the central porforwardly curved end of theplow beam, and tion of the sloping wall 5, for rotatably mounting L Share at the forward end theremounting a shaft 10, which projects through of and a shaft for rotation in a horizontal the casing, and has one free end seated in a plane provided with bearings in the central bearing ll, mounted on the vertical wall 3, portion of the casing, for mounting a disc 1n horizontal alignment with the bearing 9, member for rotation which is adapted to so that the shaft l0 normally rotates in a Si? l form a rotatable mold board, adapted to dis horizontal plane. The other free end of the `charge the earth broken by the share. shaft l() extends beyond the sloping wall 5 The invention includes other objects and of the casing, and carries a concaved disc improvements in the details of construction element l2, which forms a revolving mold and arrangement of the parts which are board, and on the rear side of which is car- S5 more particularly pointed out in the followried a sprocket 13,'surrounding the shaft l0, ing description. and claim, directed to a for receiving a suitable drive chain from a preferred form of the invention, it being source of power by which the mold board is understood, however, that various changes rotated. The lower edge of the disc l2 proin the size, shape and construction of these jects in the rear of and below the upper free 9U parts may be made, without departing from edge 14 of the plow share 6, so that as the the spirit and scope of the invention as defurrow is opened by the share, the dirt will scribed and claimed. be directed upwardly against the revolving In the drawing, forming a part of this mold board, which will effect the turning of 40 application: p the furrow away from the plow, in a well 95 Figure l iS 3, plSpGCtiVe View Of the imkuQWn manner, proved plow construction, having a IOtatn- A suitable form of scraping device is inble mold board. dicated at l5, for cleaning the surface of Figure 2 is a vertical transverse SeGtlOn the disc 12, which is mounted in a suitable 4.5 through the structure shown 1n Figure l. manner on the casing 2 through the medium 100 l indicates the rear downwardly and for- @if i bracket 16 wardly curved end Of a plOW beam, Oli Wllll F rom the above description it will be seen is mounted a casing 2, having a Veri-iCal fall that the casing structure 2 in mounting the 3, on the land Side Of th@ beam, tape/T1112, shaft l0 in the bearings 9 and ll will have dOWnW'dly and forwardly t0 the OlWllfl the torsional strain directed thereto, when end, and terminating in Substantially n pOln the plow is in use, distributed throughout with the bottom Wall 4 theleO, Which 8X" the sloping and vertical walls of the casing tends laterally and inclines slightly downwhich are maintained in rigid relation wardly from the lower edge of said vertical through the bottom walls. This provides a wall 3, as shown in Figure 2, the outer edge rigid mounting structure for the disc, so 110 that the same will be maintained in operativey relation and condition on the casing, although subjected to rough usage. In addition, the casing 2 can be readily attached to the plow beam, by postsor the like, the heads of which are protected thereby, in vorder that the same may be readily removed for replacement or repair, the casing. being of s imple construction, and therefore can be manufactured at arelatively small cost.` What is claimedisj A. revolving moldk board plow. structureincluding a casing rigidly mountedjon the, depending, forwardly curved end o'fay plowbeam, said casingthfavinga vertical ,wallon thej land side of thebeam, thel upper4 edge, of which inclines Ydownwardly and forwardly,

a bottom wall extending laterally andHinclining slightly, downwardly from the. vertical l Wall, and havingthe free edge inclined-forwardly toward saidrrvertical wall, and terminating in a forward substantially pointed Y Vend therewith,'and a sloping wall connect,-

bearings mounted inthe .sloping and vertical v walls respectively, in horizontal alignment, a shaft rotatable in said bearings, a disc mem- Y ber forming a mold board mounted onthe outer 4endv of said shaft, adjacent saidvsloping wall'for rotation therewith, the-v lower portionVo-f said disc extendingVintlfie'rearv of 1 theupper edge of` said` shaft, and a" sprocket mounted on the shaft for receivingV a drive chain for rotating said shaft and-disc,

the bearings-being carried in spaced relation by the sloping and vertical'wal'ls offtheeas-y ing, serving to distributethe torsional strains i from the, shaft` throughout the casing. 

